Wideband, variable-bandwidth distributed amplifier
US6768380B2 · kind B2 · utility
20Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2002 |
| Grant date | Jul 27, 2004 |
| Priority date | — |
| Expiry date | Oct 11, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/607
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A variable bandwidth, distributed amplifier circuit includes an input transmission line; an output transmission line; and a plurality of amplifier cells having a respective plurality of cell inputs distributed along the input transmission line and cell outputs distributed along said output transmission line. Each amplifier cell comprises a cascode amplifier having an input transistor, an output transistor, and a variable impedance device in a circuit branch coupled to a gate of the output transistor. The impedance of the variable impedance device is responsive to a variable bias control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.